Hose-coupling.



J. H. stlBPmzNs.v

HOSE GOUPLING.

APPLICATION FILED JUNE 16, 1908.

969,216. Patented sepa 6, 1910.

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NHO'SE-COUPLING.

Specification of Letters ".Pa'ltent. Patented Sept. 6, 1910.

Application 1ed,June 16, 1908. Serial o. 438,789.

To allwwhomf may concern:

Be it known that I, JOHN H. STEPHENS, citizen of the United States, residing at Vernon, inthe county of Wilbarger and State of Texas, have invented certain new and useful Improvements yin Hose-Couplings, of which the following isa specication.

The present invention provides a coupling designed-most especially for fire hose whlch must resist heavy pressure and a pulling strain, the intent being to secure a tight `joint between two sections of hose when coupled and` to prevent the hose drawing from the coupling when under tension.

The invention also aims to supply a coupling involving few parts and a comparatively cheap and light structure consistent' with serviceability and etliciency and whichv may be easilyand convenientlyhandled both 1n coupling and uncoupling'.

For a full understandin Y of the invention and the merits thereof an `also to acquire a knowledge of the details of construction and the means for effecting the result, reference is to be had to the following description and accompanying drawings.

Whlle the invention 'may be adapted to dil'erentforms and conditions b changes Lin the structure and minor detai swithout departing from the spirit or essential features thereof, still the preferred embodiment is shown in the accompanying drawings, in which: j

Fi re 1 is a longitudinal section of ahose coup ingembodying the invention, showing the relation of the partsbefore the coupling is tightened. Fig. 2 is a view similar to Fig. i

1, showin the dlsposition of the the coupling has been tightened.

- Corresponding and like parts are referred to inthe following description and indicated parts after in both views of the' drawing by the same reference characters.

Thecouphngj'comprlses an expandlng rmg 1, a coupling member 2 and aswivel connec tion 3. The expanding ring 1 is tapered throughout its length 4to a knife or feather edge at its inner end. The outer 'end of the expandin ring is beveled, as indicated at 4. Annu ar grooves or fine ribs 5 are formed upon the outer surface of the expanding ring and are intended to make posltive engagementwith the hose 6 so as to preventshp-l ping when the parts are assembled and properly connected. The expanding ring 1s of wrought metal so as to admit of its expansion/without rupture.

. The coupling member 2 is provided at one end With an outer flange 7 and its. opposite end istlared, as indicated at 8, the purpose 'being to prevent the formation of a sharp corner which would tend to cut or weaken the-hose by being bent thereover in use. The coupling member 2 iiares throughout its length toward its outer end, the inclination correspondin to the taper or. inclination of the expan ing rin 1. The hose 6 has its end portion clamped etween the expanding ring 1 and the coupling member 2, the ring 5 being expanded by a suitable tool to insure the firm grippingof the h ose between it and the coup ing member 2. Theparts 1 and 2 are of' such 'relative diameters that when the end of the hose is clamped between them, the front end of the coupling member terminates about in the plane of the beveled end of'the expandin ring, thereby leaving the extremity of the ose projecting a short distance in front of the coupling'member free so as to be deected over the beveled end 4 of the expanding ring and be confined between said beveled end and an inner beveled shoulder 9 of a coperating coupling of the inner flange 11 -to make connection with the outer end portion of the cou ling member l0. The function of the swive connector 3 is to couple or unitethe members l2 and 10. Anl inner annular groove 12 is provided upon the inner side of the'part 3 a short distance from the' flange l1 and receives a ring 13 which is sprung therein and contines the outer flange 7 between it and the liange 11 so as to hold the and 2 in proper position. The ring 13 is preferably of metal and issplit so as to spring into the annular groove 12 and become seated therein. v

The coperating member 10 may be a ring for connecting the hose to a hydrant, plug or other water fixture, the same consisting of a member fitted to the end of the hose to admit'of the couplingof two hose sections parts 3.

when it is re uired to join the same to provide a hose o required le gth.

It is to be particularl noted that the apex of the beveled end 4 othe expanding ring l registers with the annular groove 12 in the interior wall of the swivel connector 3, whereby when the cou ling member 10 is screwed into the swive connector 3 it will clamp the projecting end of the hose between the beveled walls 4 and 9, the hose will be pinched between such walls and by expansion form an annular exterior bead within the groove 12 so as to assist in producing a water tight joint.

Having thus described the inventi'on,what is claimed as new is:

In a coupling of the character described, the combination of a hose pipe, a ring mounted within the end of the. pipe, with the pipe projecting beyond the outer end of the ring, said ring being enlarged from its inner end toward its outer end and formed at such outer end with a beveled exterior wall, a coupling member encircling the hose pipe and coacting with the ring to tightly clamp the hose between the coupling member and the ring, said coupling member being formed at its outer end with an exterior annular iiange, a swivel connector formed at its inner end with an inturned flange taking overv the iange of the coupling member; sald swivel connector being formed with an interior annular groove, a split ring mounted within the groove and holding between it and the iange of the swivel connector the flange of the couplin member, the inner circumferential wall o said split ring being spacedv from the hose pipe, and another coupling member adapte to screw into the swivel connector and formed at its outer end with a beveled interior wall corresponding to the beveled exterior .wall of the iirst named ring, said two walls binding between them the projecting end portion o the hose pipe, the apex of the beveled wall of the first. named ring registering with the inner groove of the swivel connector whereby the hose pipe will be permitted to expand in the space between said apex and the inner circumferential wall of the split ring, as and for the purpose set4 forth.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN H. STEPHENS. [1.. s]

Witnesses:

V. B. HILLYARD, W. N. .WoonsoN. 

